Book excerpt: Learn a lot about science as you make models showing how thingswork! A spectacular model of an active volcano . . . a fascinatingrepresentation of the solar system . . . scale reproductions ofatoms and molecules . . . In Janice VanCleave's Super ScienceModels, America's favorite science teacher shows you how to makethese and other eye-catching science models that will help you showwhat you know in class or at a science fair! Inside, you'll find easy-to-follow instructions for 25 great modelsthat reveal the worlds of astronomy, biology, chemistry, earthscience, and physics. You'll also get helpful hints on displayingyour models, including advice on backboards, scale models, stands,and other clever techniques. As with all of Janice VanCleave'sbooks, every project can be created at home or in the classroomwith safe, inexpensive materials. Through models of Earth's layers,the states of matter, an electric circuit, and much more, you'lldiscover how scientists use models to make it easier to describethings and share their ideas. So get ready to have a great time andimpress others with what you've learned making these fun, fabulousmodels!